Just to intro myself...
I'm 39 and have suffered from HH since my early 20s... I have problems with my hands, axillae and back, but my feet are by far the worst.
Over the years I've tried all the topical treatments, and ionto (with and without Bicarb and robinul) and after all this time, have decided enough is enough, and I'm about to start robinul 2mg tablets.
Ironically, I'm also a Dermy sister, and have treated loads of fellow sufferers, having seen that my problem appears easily as bad as many that I've treated, it's quite odd that I've never looked into further treatments myself, but speaking to one of my colleagues helped push me into it.
My consultant colleague even went so far as to say mine is one of the more severe cases he's dealt with. My socks bleach in no time, I rot my shoes (and keep changing insoles), my shirts are all stained and when it's at its worst, the sweat literally drips off my hands and feet... not nice

So, I'm keeping my fingers crossed for the robinul. I'm going to start on 2mg a day, but I (and my consultant colleague) aren't hopeful, and I'm assuming I'll have to up to 6mg a day fairly soon.
I'll let you know what happens
